Create preview environments with Terraform, GitHub Actions, and Vercel

Continuous integration and delivery (CI/CD) lets you release more frequently by automating testing and other tasks, so you can ship improvements to your services sooner. Preview environments are temporary environments that your CI pipelines can create for new pull requests to demonstrate feature changes. This helps your team (developers, product, QA) discover bugs faster, and experiment with the latest features without manually checking-out the branch and running the application locally.

Vercel is a platform that deploys frontend frameworks and static websites instantaneously, scales them automatically, and generates preview environments. While you can use Vercel's Git integration to create preview environments with serverless backends, Terraform lets you handle more complex preview environment setups that use Vercel for the frontend and other services for the backend. This creates fully-featured applications that you can share with your stakeholders for review and testing.